AWS Restore Gone Wrong

I had a snapshot of my ISPConfig instance that is known good. I messed up the running instance, so I needed to create a volume from that snapshot and attach it to a new EC2 instance in AWS. I got that done and fired up the instance but the private IP address of the new instance differs from the old IP address. I assume there is someplace in the ISPConfig files that I need to change the old 172.x.x.x IP to the new 172.x.x.x private IP. Any ideas where that is?